Pneumatic cylinder
MHZ pneumatic gripper
MHZ pneumatic gripper
Specifications
- Material
- Aluminum alloy
- Operation pressure
- 0.1-0.9Mpa
- Working Medium
- Air
- Working temperature range
- -5-60 degree
MHZ Series Two-Finger Parallel Pneumatic Gripper
The MHZ Series Two-Finger Parallel Pneumatic Gripper is designed for gripping, holding, positioning and transferring components in automated machinery.
Its two fingers move parallel to each other, helping maintain consistent contact with the workpiece throughout the opening and closing movement. The gripper can be configured for external gripping, internal gripping, double-acting operation, normally open single-acting operation or normally closed single-acting operation.
The standard MHZ Series is available in bore sizes from 6 mm to 40 mm. The MHZL long-stroke version provides increased finger travel for components with larger size variations.
Key Features
Parallel Finger Movement
Both fingers move in parallel, providing symmetrical gripping around the workpiece centerline.
This movement is suitable for:
- Cylindrical components
- Rectangular components
- Molded plastic parts
- Metal workpieces
- Electronic components
- Packaging products
External and Internal Gripping
The gripper can operate in two principal ways:
- External gripping: The fingers close around the outside of the workpiece.
- Internal gripping: The fingers open against an internal bore or recess.
Double-Acting and Single-Acting Options
Available action types include:
- Double acting
- Single acting, normally open
- Single acting, normally closed
The single-acting versions use spring force to return the fingers to a defined position when air pressure is removed.
Standard and Long-Stroke Models
Two model families are listed:
- MHZ: Standard parallel-finger gripper
- MHZL: Long-stroke parallel-finger gripper
The MHZL Series provides greater total finger travel for gripping parts with a wider dimensional range.
Bore Sizes from 6 to 40 mm
Available bore sizes include:
- 6 mm
- 10 mm
- 16 mm
- 20 mm
- 25 mm
- 32 mm
- 40 mm
Multiple Finger-Mounting Styles
Standard-width and narrow finger bases are available with side screw holes or through holes in the opening and closing direction.
High Repeatability
The catalog specifies repeatability of:
- ±0.01 mm for smaller and medium sizes
- ±0.02 mm for larger sizes
This makes the MHZ suitable for repetitive automated handling applications.
Optional Solid-State Auto Switch
An optional solid-state sensor can provide position feedback to a PLC or machine controller.
Non-Lubricated Operation
The catalog states that lubrication is not required, simplifying the pneumatic circuit and routine maintenance.
Technical Specifications
Item | Specification |
Product series | MHZ/MHZL |
Product type | Two-finger parallel pneumatic gripper |
Bore sizes | 6, 10, 16, 20, 25, 32 and 40 mm |
Working medium | Filtered compressed air |
Filtration requirement | Air filtered through a 40 μm filter element |
Action types | Double acting or single acting |
Single-acting options | Normally open or normally closed |
Ambient and medium temperature | -10°C to +60°C |
Lubrication | Not required |
Repeatability | ±0.01 or ±0.02 mm, depending on size |
Maximum operating frequency | 60–180 cycles per minute, depending on size |
XHZL maximum frequency | 120 cycles per minute for applicable sizes |
Auto switch | Optional solid-state auto switch |
Port size | M3 × 0.5 or M5 × 0.8, depending on bore |
Gripping method | External or internal |
Standard finger quantity | Two |
Operating-Pressure Range
All values are in MPa.
Bore Size | Double Acting | Single Acting |
6 mm | 0.15–0.7 | 0.30–0.7 |
10 mm | 0.20–0.7 | 0.35–0.7 |
16 mm | 0.10–0.7 | 0.25–0.7 |
20 mm | 0.10–0.7 | 0.25–0.7 |
25 mm | 0.10–0.7 | 0.25–0.7 |
32 mm | 0.10–0.7 | 0.25–0.7 |
40 mm | 0.10–0.7 | 0.25–0.7 |
The actual pressure required depends on the workpiece mass, finger length, gripping direction, friction coefficient and machine acceleration.
Repeatability
Bore Size | Repeatability |
6 mm | ±0.01 mm |
10 mm | ±0.01 mm |
16 mm | ±0.01 mm |
20 mm | ±0.01 mm |
25 mm | ±0.01 mm |
32 mm | ±0.02 mm |
40 mm | ±0.02 mm |
Repeatability describes the consistency of the finger position under comparable operating conditions. It does not represent complete machine positioning accuracy.
Maximum Operating Frequency
Bore Size | MHZ Standard Series | MHZL Long-Stroke Series |
6–25 mm | Up to 180 cycles/min | Up to 120 cycles/min where available |
32–40 mm | Up to 60 cycles/min | Confirm according to model |
Operating frequency should be reduced when the gripper handles a heavy workpiece, uses long custom fingers or experiences high impact.
Air Port Selection
Bore Size | Port Size |
6 mm | M3 × 0.5 |
10 mm | M3 × 0.5 |
16 mm | M5 × 0.8 |
20 mm | M5 × 0.8 |
25 mm | M5 × 0.8 |
32 mm | M5 × 0.8 |
40 mm | M5 × 0.8 |
Use pneumatic fittings with the correct thread. Prevent sealing material, metal chips and other contaminants from entering the gripper.
MHZ Standard-Series Gripping Force
Model | Double Acting External | Double Acting Internal | Single Acting External | Single Acting Internal | Total Opening/Closing Stroke |
MHZ-6D | 3.3 N | 6.1 N | 1.9 N | 3.7 N | 4 mm |
MHZ-10D | 11 N | 17 N | 7.1 N | 13 N | 4 mm |
MHZ-16D | 34 N | 45 N | 27 N | 38 N | 6 mm |
MHZ-20D | 42 N | 66 N | 33 N | 57 N | 10 mm |
MHZ-25D | 65 N | 104 N | 45 N | 83 N | 14 mm |
MHZ-32D | 158 N | 193 N | 131 N | 161 N | 22 mm |
MHZ-40D | 254 N | 318 N | 217 N | 267 N | 30 mm |
The following values are the catalog’s RMS gripping-force figures for each finger.
The supplied table does not state the pressure, finger length or test geometry used for these force values. Confirm the rating conditions before using the values as guaranteed application forces.
MHZL Long-Stroke-Series Gripping Force
The following long-stroke values are clearly visible in the supplied document:
Model | Double Acting External | Double Acting Internal | Single Acting External | Single Acting Internal | Total Opening/Closing Stroke |
MHZL-10D | 11 N | 17 N | 7.1 N | 13 N | 8 mm |
MHZL-16D | 34 N | 45 N | 27 N | 38 N | 12 mm |
MHZL-20D | 42 N | 66 N | 33 N | 57 N | 18 mm |
MHZL-25D | 65 N | 104 N | 50 N | 85 N | 22 mm |
The remaining MHZL rows are cut off in the supplied image and should be confirmed from the complete catalog before publication.
Frequently Asked Questions
What is an MHZ pneumatic gripper?
It is a two-finger parallel air gripper designed to hold and transfer workpieces in industrial automation.
What is the difference between MHZ and MHZL?
MHZ is the standard-stroke version. MHZL provides longer finger travel.
What bore sizes are available?
The standard bore sizes are 6, 10, 16, 20, 25, 32 and 40 mm.
Is the gripper double acting?
Double-acting, normally open single-acting and normally closed single-acting versions are available.
Can it grip from inside a hole?
Yes. The gripper can be configured for internal gripping by opening the fingers inside the workpiece bore.
What is the maximum pressure?
The maximum listed operating pressure is 0.7 MPa.
What is the operating-temperature range?
The specified range is -10°C to +60°C.
Does the gripper require lubrication?
No. The catalog states that lubrication is not required.
What is the repeatability?
The listed repeatability is ±0.01 mm for smaller and medium sizes and ±0.02 mm for larger sizes.
Are custom fingers included?
The gripper includes its basic moving fingers, but application-specific contact jaws normally require separate design and confirmation.
Can an auto switch detect the workpiece?
An auto switch detects the gripper mechanism’s position. It may help infer the presence of a workpiece, but it is not the same as a dedicated part-presence sensor.
What port sizes are used?
The 6 and 10 mm bore models use M3 × 0.5. The 16–40 mm models use M5 × 0.8.
Can the gripper hold a part if air pressure is lost?
A single-acting normally closed model uses spring force to close, but its holding ability depends on spring force, finger design and workpiece conditions. Use additional safety measures when dropping the part could create a hazard.
